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malte
Journeyman III

DirectX StretchRect YUV/UYVY/YUY2->RGB Color Conversion

Hello,


I'm using IDirect3DDevice9::StretchRect for color conversion from UYVY/YUY2 color space to RGB color space. To control the displayed colors as much as possible I would like to know which matrix coefficients are used for the conversion. Maybe ITU Rec.601 for SD and ITU Rec.709 for HD?

If my assumption is right that there is a switch of coefficients depending on the resolution: What's the exact resolution when coefficients are switched? 1920 x 1080?

As far as I know it's left to the driver developer to implement this that's why I ask this question hear.


Thank you very much for your help!


Malte

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2 Replies
kcarney
Staff

Is this what you need?

// Setup default CSC: BT601

m_defaultCSC.rgbOffset.x = -0.06274510f;

m_defaultCSC.rgbOffset.y = -0.50196078f;

    m_defaultCSC.rgbOffset.z = -0.50196078f;

m_defaultCSC.rgbOffset.w =  0.0f;

m_defaultCSC.redCoef.x   =  1.16438355f;

m_defaultCSC.redCoef.y   =  0.0f;

m_defaultCSC.redCoef.z   =  1.59602715f;

m_defaultCSC.redCoef.w   =  0.0f;

    m_defaultCSC.greenCoef.x =  1.16438355f;

m_defaultCSC.greenCoef.y = -0.3917616f;

m_defaultCSC.greenCoef.z = -0.81296805f;

m_defaultCSC.greenCoef.w =  0.0f;

m_defaultCSC.blueCoef.x  =  1.16438355f;

m_defaultCSC.blueCoef.y  =  2.01723105f;

m_defaultCSC.blueCoef.z  =  0.0f;

m_defaultCSC.blueCoef.w  =  0.0f;

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Thank you, that already helps. But does it mean that you don't switch the CSC Table for HD?

Regards

Malte

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